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0485-2013

Installations adjustment with the line C/N

Description: 

Despite the analogue switch-off, analogue signals (the most sensitive to noise) can be very useful as a pattern to evaluate the quality 01 an installation or to adjust it, specially headends, cascade amplifiers or even fiber optic links.
To do that you can generate an analogue channel and measure the line C/N with your H45. The highest line C/N value assures
 

 

the best  transmission conditions in the network.
In the specific case of an optic link, the input level on the transmitter and the receiver gain are parameters that, although they have to be calculated, can be adjusted using the line G/N of one of the analogue channels generated by the headends

 

 


 

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